src/game_session.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux
   4 //  Copyright (C) 2000 Bill Kendrick <bill@newbreedsoftware.com>
   5 //  Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
   6 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   7 //
   8 //  This program is free software; you can redistribute it and/or
   9 //  modify it under the terms of the GNU General Public License
  10 //  as published by the Free Software Foundation; either version 2
  11 //  of the License, or (at your option) any later version.
  12 //
  13 //  This program is distributed in the hope that it will be useful,
  14 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 //  GNU General Public License for more details.
  17 //
  18 //  You should have received a copy of the GNU General Public License
  19 //  along with this program; if not, write to the Free Software
  20 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 #include <config.h>
  22
  23 #include <iostream>
  24 #include <fstream>
  25 #include <sstream>
  26 #include <cassert>
  27 #include <cstdio>
  28 #include <cstdlib>
  29 #include <cmath>
  30 #include <cstring>
  31 #include <cerrno>
  32 #include <unistd.h>
  33 #include <ctime>
  34 #include <stdexcept>
  35
  36 #include <SDL.h>
  37
  38 #include "game_session.hpp"
  39 #include "video/screen.hpp"
  40 #include "audio/sound_manager.hpp"
  41 #include "gui/menu.hpp"
  42 #include "sector.hpp"
  43 #include "level.hpp"
  44 #include "tile.hpp"
  45 #include "player_status.hpp"
  46 #include "object/particlesystem.hpp"
  47 #include "object/background.hpp"
  48 #include "object/tilemap.hpp"
  49 #include "object/camera.hpp"
  50 #include "object/player.hpp"
  51 #include "lisp/lisp.hpp"
  52 #include "lisp/parser.hpp"
  53 #include "resources.hpp"
  54 #include "worldmap.hpp"
  55 #include "misc.hpp"
  56 #include "statistics.hpp"
  57 #include "timer.hpp"
  58 #include "object/fireworks.hpp"
  59 #include "textscroller.hpp"
  60 #include "control/codecontroller.hpp"
  61 #include "control/joystickkeyboardcontroller.hpp"
  62 #include "main.hpp"
  63 #include "file_system.hpp"
  64 #include "gameconfig.hpp"
  65 #include "gettext.hpp"
  66
  67 // the engine will be run with a logical framerate of 64fps.
  68 // We chose 64fps here because it is a power of 2, so 1/64 gives an "even"
  69 // binary fraction...
  70 static const float LOGICAL_FPS = 64.0;
  71
  72 GameSession* GameSession::current_ = 0;
  73
  74 GameSession::GameSession(const std::string& levelfile_, GameSessionMode mode,
  75     Statistics* statistics)
  76   : level(0), currentsector(0), mode(mode),
  77     end_sequence(NO_ENDSEQUENCE), end_sequence_controller(0),
  78     levelfile(levelfile_), best_level_statistics(statistics),
  79     capture_demo_stream(0), playback_demo_stream(0), demo_controller(0)
  80 {
  81   current_ = this;
  82   currentsector = 0;
  83
  84   game_pause = false;
  85   music_playing = false;
  86   fps_fps = 0;
  87
  88   context = new DrawingContext();
  89
  90   restart_level();
  91 }
  92
  93 void
  94 GameSession::restart_level()
  95 {
  96   game_pause   = false;
  97   exit_status  = ES_NONE;
  98   end_sequence = NO_ENDSEQUENCE;
  99
 100   main_controller->reset();
 101
 102   delete level;
 103   currentsector = 0;
 104
 105   level = new Level;
 106   level->load(levelfile);
 107
 108   global_stats.reset();
 109   global_stats.set_total_points(COINS_COLLECTED_STAT, level->get_total_coins());
 110   global_stats.set_total_points(BADGUYS_KILLED_STAT, level->get_total_badguys());
 111   //global_stats.set_total_points(TIME_NEEDED_STAT, level->timelimit);
 112
 113   if(reset_sector != "") {
 114     currentsector = level->get_sector(reset_sector);
 115     if(!currentsector) {
 116       std::stringstream msg;
 117       msg << "Couldn't find sector '" << reset_sector << "' for resetting tux.";
 118       throw std::runtime_error(msg.str());
 119     }
 120     currentsector->activate(reset_pos);
 121   } else {
 122     currentsector = level->get_sector("main");
 123     if(!currentsector)
 124       throw std::runtime_error("Couldn't find main sector");
 125     currentsector->activate("main");
 126   }
 127
 128   if(mode == ST_GL_PLAY || mode == ST_GL_LOAD_LEVEL_FILE)
 129     levelintro();
 130
 131   if (!music_playing)
 132   {
 133     currentsector->play_music(LEVEL_MUSIC);
 134     music_playing = true;
 135   }
 136
 137   if(capture_file != "")
 138     record_demo(capture_file);
 139 }
 140
 141 GameSession::~GameSession()
 142 {
 143   delete capture_demo_stream;
 144   delete playback_demo_stream;
 145   delete demo_controller;
 146
 147   delete end_sequence_controller;
 148   delete level;
 149   delete context;
 150
 151   current_ = NULL;
 152 }
 153
 154 void
 155 GameSession::record_demo(const std::string& filename)
 156 {
 157   delete capture_demo_stream;
 158
 159   capture_demo_stream = new std::ofstream(filename.c_str());
 160   if(!capture_demo_stream->good()) {
 161     std::stringstream msg;
 162     msg << "Couldn't open demo file '" << filename << "' for writing.";
 163     throw std::runtime_error(msg.str());
 164   }
 165   capture_file = filename;
 166 }
 167
 168 void
 169 GameSession::play_demo(const std::string& filename)
 170 {
 171   delete playback_demo_stream;
 172   delete demo_controller;
 173
 174   playback_demo_stream = new std::ifstream(filename.c_str());
 175   if(!playback_demo_stream->good()) {
 176     std::stringstream msg;
 177     msg << "Couldn't open demo file '" << filename << "' for reading.";
 178     throw std::runtime_error(msg.str());
 179   }
 180
 181   Player& tux = *currentsector->player;
 182   demo_controller = new CodeController();
 183   tux.set_controller(demo_controller);
 184 }
 185
 186 void
 187 GameSession::levelintro()
 188 {
 189   char str[60];
 190
 191   DrawingContext context;
 192   for(Sector::GameObjects::iterator i = currentsector->gameobjects.begin();
 193       i != currentsector->gameobjects.end(); ++i) {
 194     Background* background = dynamic_cast<Background*> (*i);
 195     if(background) {
 196       background->draw(context);
 197     }
 198   }
 199
 200 //  context.draw_text(gold_text, level->get_name(), Vector(SCREEN_WIDTH/2, 160),
 201 //      CENTER_ALLIGN, LAYER_FOREGROUND1);
 202   context.draw_center_text(gold_text, level->get_name(), Vector(0, 160),
 203       LAYER_FOREGROUND1);
 204
 205   sprintf(str, "TUX x %d", player_status->lives);
 206   context.draw_text(white_text, str, Vector(SCREEN_WIDTH/2, 210),
 207       CENTER_ALLIGN, LAYER_FOREGROUND1);
 208
 209   if((level->get_author().size()) && (level->get_author() != "SuperTux Team"))
 210     //TODO make author check case/blank-insensitive
 211     context.draw_text(white_small_text,
 212       std::string(_("contributed by ")) + level->get_author(),
 213       Vector(SCREEN_WIDTH/2, 350), CENTER_ALLIGN, LAYER_FOREGROUND1);
 214
 215
 216   if(best_level_statistics != NULL)
 217     best_level_statistics->draw_message_info(context, _("Best Level Statistics"));
 218
 219   context.do_drawing();
 220
 221   wait_for_event(1.0, 3.0);
 222 }
 223
 224 void
 225 GameSession::on_escape_press()
 226 {
 227   if(currentsector->player->is_dying() || end_sequence != NO_ENDSEQUENCE)
 228     return;   // don't let the player open the menu, when he is dying
 229
 230   if(mode == ST_GL_TEST) {
 231     exit_status = ES_LEVEL_ABORT;
 232   } else if (!Menu::current()) {
 233     Menu::set_current(game_menu);
 234     game_menu->set_active_item(MNID_CONTINUE);
 235     game_pause = true;
 236   } else {
 237     game_pause = false;
 238   }
 239 }
 240
 241 void
 242 GameSession::process_events()
 243 {
 244   Player& tux = *currentsector->player;
 245   main_controller->update();
 246
 247   // end of pause mode?
 248   if(!Menu::current() && game_pause) {
 249     game_pause = false;
 250   }
 251
 252   if (end_sequence != NO_ENDSEQUENCE) {
 253     if(end_sequence_controller == 0) {
 254       end_sequence_controller = new CodeController();
 255       tux.set_controller(end_sequence_controller);
 256     }
 257
 258     end_sequence_controller->press(Controller::RIGHT);
 259
 260     if (int(last_x_pos) == int(tux.get_pos().x))
 261       end_sequence_controller->press(Controller::JUMP);
 262     last_x_pos = tux.get_pos().x;
 263   }
 264
 265   main_controller->update();
 266   SDL_Event event;
 267   while (SDL_PollEvent(&event)) {
 268     /* Check for menu-events, if the menu is shown */
 269     if (Menu::current())
 270       Menu::current()->event(event);
 271     main_controller->process_event(event);
 272     if(event.type == SDL_QUIT)
 273       throw std::runtime_error("Received window close");
 274   }
 275
 276   // playback a demo?
 277   if(playback_demo_stream != 0) {
 278     demo_controller->update();
 279     char left = false;
 280     char right = false;
 281     char up = false;
 282     char down = false;
 283     char jump = false;
 284     char action = false;
 285     playback_demo_stream->get(left);
 286     playback_demo_stream->get(right);
 287     playback_demo_stream->get(up);
 288     playback_demo_stream->get(down);
 289     playback_demo_stream->get(jump);
 290     playback_demo_stream->get(action);
 291     demo_controller->press(Controller::LEFT, left);
 292     demo_controller->press(Controller::RIGHT, right);
 293     demo_controller->press(Controller::UP, up);
 294     demo_controller->press(Controller::DOWN, down);
 295     demo_controller->press(Controller::JUMP, jump);
 296     demo_controller->press(Controller::ACTION, action);
 297   }
 298
 299   // save input for demo?
 300   if(capture_demo_stream != 0) {
 301     capture_demo_stream ->put(main_controller->hold(Controller::LEFT));
 302     capture_demo_stream ->put(main_controller->hold(Controller::RIGHT));
 303     capture_demo_stream ->put(main_controller->hold(Controller::UP));
 304     capture_demo_stream ->put(main_controller->hold(Controller::DOWN));
 305     capture_demo_stream ->put(main_controller->hold(Controller::JUMP));
 306     capture_demo_stream ->put(main_controller->hold(Controller::ACTION));
 307   }
 308 }
 309
 310 void
 311 GameSession::try_cheats()
 312 {
 313   if(currentsector == 0)
 314     return;
 315   Player& tux = *currentsector->player;
 316
 317   // Cheating words (the goal of this is really for debugging,
 318   // but could be used for some cheating, nothing wrong with that)
 319   if(main_controller->check_cheatcode("grow")) {
 320     tux.set_bonus(GROWUP_BONUS, false);
 321   }
 322   if(main_controller->check_cheatcode("fire")) {
 323     tux.set_bonus(FIRE_BONUS, false);
 324   }
 325   if(main_controller->check_cheatcode("ice")) {
 326     tux.set_bonus(ICE_BONUS, false);
 327   }
 328   if(main_controller->check_cheatcode("lifeup")) {
 329     player_status->lives++;
 330   }
 331   if(main_controller->check_cheatcode("lifedown")) {
 332     player_status->lives--;
 333   }
 334   if(main_controller->check_cheatcode("grease")) {
 335     tux.physic.set_velocity_x(tux.physic.get_velocity_x()*3);
 336   }
 337   if(main_controller->check_cheatcode("invincible")) {
 338     // be invincle for the rest of the level
 339     tux.invincible_timer.start(10000);
 340   }
 341   if(main_controller->check_cheatcode("mortal")) {
 342     // give up invincibility
 343     tux.invincible_timer.stop();
 344   }
 345   if(main_controller->check_cheatcode("shrink")) {
 346     // remove powerups
 347     tux.kill(tux.SHRINK);
 348   }
 349   if(main_controller->check_cheatcode("kill")) {
 350     // kill Tux, but without losing a life
 351     player_status->lives++;
 352     tux.kill(tux.KILL);
 353   }
 354   if(main_controller->check_cheatcode("whereami")) {
 355     std::cout << "You are at x " << tux.get_pos().x << ", y " << tux.get_pos().y << "." << std::endl;
 356   }
 357 #if 0
 358   if(main_controller->check_cheatcode("grid")) {
 359     // toggle debug grid
 360     debug_grid = !debug_grid;
 361   }
 362 #endif
 363   if(main_controller->check_cheatcode("gotoend")) {
 364     // goes to the end of the level
 365     tux.move(Vector(
 366           (currentsector->solids->get_width()*32) - (SCREEN_WIDTH*2), 0));
 367     currentsector->camera->reset(
 368         Vector(tux.get_pos().x, tux.get_pos().y));
 369   }
 370   if(main_controller->check_cheatcode("finish")) {
 371     // finish current sector
 372     exit_status = ES_LEVEL_FINISHED;
 373     // don't add points to stats though...
 374   }
 375 }
 376
 377 void
 378 GameSession::check_end_conditions()
 379 {
 380   Player* tux = currentsector->player;
 381
 382   /* End of level? */
 383   if(end_sequence && endsequence_timer.check()) {
 384     exit_status = ES_LEVEL_FINISHED;
 385     return;
 386   } else if (!end_sequence && tux->is_dead()) {
 387     if (player_status->lives < 0) { // No more lives!?
 388       exit_status = ES_GAME_OVER;
 389     } else { // Still has lives, so reset Tux to the levelstart
 390       restart_level();
 391     }
 392
 393     return;
 394   }
 395 }
 396
 397 void
 398 GameSession::update(float elapsed_time)
 399 {
 400   // handle controller
 401   if(main_controller->pressed(Controller::PAUSE_MENU))
 402     on_escape_press();
 403
 404   // advance timers
 405   if(!currentsector->player->growing_timer.started()) {
 406     // Update Tux and the World
 407     currentsector->update(elapsed_time);
 408   }
 409
 410   // respawning in new sector?
 411   if(newsector != "" && newspawnpoint != "") {
 412     Sector* sector = level->get_sector(newsector);
 413     if(sector == 0) {
 414       std::cerr << "Sector '" << newsector << "' not found.\n";
 415     }
 416     sector->activate(newspawnpoint);
 417     sector->play_music(LEVEL_MUSIC);
 418     currentsector = sector;
 419     newsector = "";
 420     newspawnpoint = "";
 421   }
 422
 423   // update sounds
 424   sound_manager->set_listener_position(currentsector->player->get_pos());
 425 }
 426
 427 void
 428 GameSession::draw()
 429 {
 430   currentsector->draw(*context);
 431   drawstatus(*context);
 432
 433   if(game_pause)
 434     draw_pause();
 435
 436   if(Menu::current()) {
 437     Menu::current()->draw(*context);
 438   }
 439
 440   context->do_drawing();
 441 }
 442
 443 void
 444 GameSession::draw_pause()
 445 {
 446   int x = SCREEN_HEIGHT / 20;
 447   for(int i = 0; i < x; ++i) {
 448     context->draw_filled_rect(
 449         Vector(i % 2 ? (pause_menu_frame * i)%SCREEN_WIDTH :
 450           -((pause_menu_frame * i)%SCREEN_WIDTH)
 451           ,(i*20+pause_menu_frame)%SCREEN_HEIGHT),
 452         Vector(SCREEN_WIDTH,10),
 453         Color(0.1, 0.1, 0.1, static_cast<float>(rand() % 20 + 1) / 255.0),
 454         LAYER_FOREGROUND1+1);
 455   }
 456
 457   context->draw_filled_rect(
 458       Vector(0,0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 459       Color(
 460         static_cast<float>(rand() % 50) / 255.0,
 461         static_cast<float>(rand() % 50) / 255.0,
 462         static_cast<float>(rand() % 50) / 255.0,
 463         0.5), LAYER_FOREGROUND1);
 464 #if 0
 465   context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 466       Vector(SCREEN_WIDTH/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 467
 468   const char* str1 = _("Playing: ");
 469   const char* str2 = level->get_name().c_str();
 470
 471   context->draw_text(blue_text, str1,
 472       Vector((SCREEN_WIDTH - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 473       LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 474   context->draw_text(white_text, str2,
 475       Vector(((SCREEN_WIDTH - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 476       LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 477 #endif
 478 }
 479
 480 void
 481 GameSession::process_menu()
 482 {
 483   Menu* menu = Menu::current();
 484   if(menu) {
 485     menu->update();
 486
 487     if(menu == game_menu) {
 488       switch (game_menu->check()) {
 489         case MNID_CONTINUE:
 490           Menu::set_current(0);
 491           break;
 492         case MNID_ABORTLEVEL:
 493           Menu::set_current(0);
 494           exit_status = ES_LEVEL_ABORT;
 495           break;
 496       }
 497     } else if(menu == options_menu) {
 498       process_options_menu();
 499     } else if(menu == load_game_menu ) {
 500       process_load_game_menu();
 501     }
 502   }
 503 }
 504
 505
 506 GameSession::ExitStatus
 507 GameSession::run()
 508 {
 509   Menu::set_current(0);
 510   current_ = this;
 511
 512   int fps_cnt = 0;
 513
 514   // Eat unneeded events
 515   SDL_Event event;
 516   while(SDL_PollEvent(&event))
 517   {}
 518
 519   draw();
 520
 521   Uint32 fps_ticks = SDL_GetTicks();
 522   Uint32 fps_nextframe_ticks = SDL_GetTicks();
 523   Uint32 ticks;
 524   bool skipdraw = false;
 525
 526   while (exit_status == ES_NONE) {
 527     // we run in a logical framerate so elapsed time is a constant
 528     static const float elapsed_time = 1.0 / LOGICAL_FPS;
 529     // old code... float elapsed_time = float(ticks - lastticks) / 1000.;
 530     if(!game_pause)
 531       game_time += elapsed_time;
 532
 533     // regulate fps
 534     ticks = SDL_GetTicks();
 535     if(ticks > fps_nextframe_ticks) {
 536       if(skipdraw == true) {
 537         // already skipped last frame? we have to slow down the game then...
 538         skipdraw = false;
 539         fps_nextframe_ticks -= (Uint32) (1000.0 / LOGICAL_FPS);
 540       } else {
 541         // don't draw all frames when we're getting too slow
 542         skipdraw = true;
 543       }
 544     } else {
 545       skipdraw = false;
 546       while(fps_nextframe_ticks > ticks) {
 547         /* just wait */
 548         // If we really have to wait long, then do an imprecise SDL_Delay()
 549         Uint32 diff = fps_nextframe_ticks - ticks;
 550         if(diff > 15) {
 551           SDL_Delay(diff - 10);
 552         }
 553         ticks = SDL_GetTicks();
 554       }
 555     }
 556     fps_nextframe_ticks = ticks + (Uint32) (1000.0 / LOGICAL_FPS);
 557
 558 #if 0
 559     float diff = SDL_GetTicks() - fps_nextframe_ticks;
 560     if (diff > 5.0) {
 561          // sets the ticks that must have elapsed
 562         fps_nextframe_ticks = SDL_GetTicks() + (1000.0 / LOGICAL_FPS);
 563     } else {
 564         // sets the ticks that must have elapsed
 565         // in order for the next frame to start.
 566         fps_nextframe_ticks += 1000.0 / LOGICAL_FPS;
 567     }
 568 #endif
 569
 570     process_events();
 571     process_menu();
 572
 573     // Update the world state and all objects in the world
 574     // Do that with a constante time-delta so that the game will run
 575     // determistic and not different on different machines
 576     if(!game_pause && !Menu::current())
 577     {
 578       // Update the world
 579       check_end_conditions();
 580       if (end_sequence == ENDSEQUENCE_RUNNING)
 581         update(elapsed_time/2);
 582       else if(end_sequence == NO_ENDSEQUENCE)
 583         update(elapsed_time);
 584     }
 585     else
 586     {
 587       ++pause_menu_frame;
 588     }
 589
 590     if(!skipdraw)
 591       draw();
 592
 593     // update sounds
 594     sound_manager->update();
 595
 596     /* Time stops in pause mode */
 597     if(game_pause || Menu::current())
 598     {
 599       continue;
 600     }
 601
 602     //frame_rate.update();
 603
 604     /* Handle music: */
 605     if (currentsector->player->invincible_timer.started() && !end_sequence)
 606     {
 607       currentsector->play_music(HERRING_MUSIC);
 608     }
 609     /* or just normal music? */
 610     else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 611     {
 612       currentsector->play_music(LEVEL_MUSIC);
 613     }
 614
 615     /* Calculate frames per second */
 616     if(config->show_fps)
 617     {
 618       ++fps_cnt;
 619
 620       if(SDL_GetTicks() - fps_ticks >= 500)
 621       {
 622         fps_fps = (float) fps_cnt / .5;
 623         fps_cnt = 0;
 624         fps_ticks = SDL_GetTicks();
 625       }
 626     }
 627   }
 628
 629   // just in case
 630   currentsector = 0;
 631   main_controller->reset();
 632   return exit_status;
 633 }
 634
 635 void
 636 GameSession::finish(bool win)
 637 {
 638   if(win)
 639     exit_status = ES_LEVEL_FINISHED;
 640   else
 641     exit_status = ES_LEVEL_ABORT;
 642 }
 643
 644 void
 645 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 646 {
 647   newsector = sector;
 648   newspawnpoint = spawnpoint;
 649 }
 650
 651 void
 652 GameSession::set_reset_point(const std::string& sector, const Vector& pos)
 653 {
 654   reset_sector = sector;
 655   reset_pos = pos;
 656 }
 657
 658 std::string
 659 GameSession::get_working_directory()
 660 {
 661   return FileSystem::dirname(levelfile);
 662 }
 663
 664 void
 665 GameSession::display_info_box(const std::string& text)
 666 {
 667   InfoBox* box = new InfoBox(text);
 668
 669   bool running = true;
 670   while(running)  {
 671
 672     main_controller->update();
 673     SDL_Event event;
 674     while (SDL_PollEvent(&event)) {
 675       main_controller->process_event(event);
 676       if(event.type == SDL_QUIT)
 677         throw std::runtime_error("Received window close event");
 678     }
 679
 680     if(main_controller->pressed(Controller::JUMP)
 681         || main_controller->pressed(Controller::ACTION)
 682         || main_controller->pressed(Controller::PAUSE_MENU)
 683         || main_controller->pressed(Controller::MENU_SELECT))
 684       running = false;
 685     box->draw(*context);
 686     draw();
 687     sound_manager->update();
 688   }
 689
 690   delete box;
 691 }
 692
 693 void
 694 GameSession::start_sequence(const std::string& sequencename)
 695 {
 696   if(sequencename == "endsequence" || sequencename == "fireworks") {
 697     if(end_sequence)
 698       return;
 699
 700     end_sequence = ENDSEQUENCE_RUNNING;
 701     endsequence_timer.start(7.0); // 7 seconds until we finish the map
 702     last_x_pos = -1;
 703     sound_manager->play_music("music/leveldone.ogg", false);
 704     currentsector->player->invincible_timer.start(7.0);
 705
 706     if(sequencename == "fireworks") {
 707       currentsector->add_object(new Fireworks());
 708     }
 709   } else if(sequencename == "stoptux") {
 710     end_sequence =  ENDSEQUENCE_WAITING;
 711   } else {
 712     std::cout << "Unknown sequence '" << sequencename << "'.\n";
 713   }
 714 }
 715
 716 /* (Status): */
 717 void
 718 GameSession::drawstatus(DrawingContext& context)
 719 {
 720   player_status->draw(context);
 721
 722   if(config->show_fps) {
 723     char str[60];
 724     snprintf(str, sizeof(str), "%2.1f", fps_fps);
 725     context.draw_text(white_text, "FPS",
 726                       Vector(SCREEN_WIDTH -
 727                              white_text->get_text_width("FPS     ") - BORDER_X, BORDER_Y + 40),
 728                       LEFT_ALLIGN, LAYER_FOREGROUND1);
 729     context.draw_text(gold_text, str,
 730                       Vector(SCREEN_WIDTH-4*16 - BORDER_X, BORDER_Y + 40),
 731                       LEFT_ALLIGN, LAYER_FOREGROUND1);
 732   }
 733 }
 734
 735 void
 736 GameSession::drawresultscreen()
 737 {
 738   char str[80];
 739
 740   DrawingContext context;
 741   for(Sector::GameObjects::iterator i = currentsector->gameobjects.begin();
 742       i != currentsector->gameobjects.end(); ++i) {
 743     Background* background = dynamic_cast<Background*> (*i);
 744     if(background) {
 745       background->draw(context);
 746     }
 747   }
 748
 749   context.draw_text(blue_text, _("Result:"), Vector(SCREEN_WIDTH/2, 200),
 750       CENTER_ALLIGN, LAYER_FOREGROUND1);
 751
 752   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 753   context.draw_text(gold_text, str, Vector(SCREEN_WIDTH/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 754
 755   sprintf(str, _("COINS: %d"), player_status->coins);
 756   context.draw_text(gold_text, str, Vector(SCREEN_WIDTH/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 757
 758   context.do_drawing();
 759
 760   wait_for_event(2.0, 5.0);
 761 }
 762
 763 std::string slotinfo(int slot)
 764 {
 765   std::string tmp;
 766   std::string slotfile;
 767   std::string title;
 768   std::stringstream stream;
 769   stream << slot;
 770   slotfile = "save/slot" + stream.str() + ".stsg";
 771
 772   try {
 773     lisp::Parser parser;
 774     std::auto_ptr<lisp::Lisp> root (parser.parse(slotfile));
 775
 776     const lisp::Lisp* savegame = root->get_lisp("supertux-savegame");
 777     if(!savegame)
 778       throw std::runtime_error("file is not a supertux-savegame.");
 779
 780     savegame->get("title", title);
 781   } catch(std::exception& e) {
 782     return std::string(_("Slot")) + " " + stream.str() + " - " +
 783       std::string(_("Free"));
 784   }
 785
 786   return std::string("Slot ") + stream.str() + " - " + title;
 787 }
 788
 789 bool process_load_game_menu()
 790 {
 791   int slot = load_game_menu->check();
 792
 793   if(slot == -1)
 794     return false;
 795
 796   if(load_game_menu->get_item_by_id(slot).kind != MN_ACTION)
 797     return false;
 798
 799   std::stringstream stream;
 800   stream << slot;
 801   std::string slotfile = "save/slot" + stream.str() + ".stsg";
 802
 803   sound_manager->stop_music();
 804   fadeout(256);
 805   DrawingContext context;
 806   context.draw_text(white_text, "Loading...",
 807                     Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT/2),
 808                     CENTER_ALLIGN, LAYER_FOREGROUND1);
 809   context.do_drawing();
 810
 811   WorldMapNS::WorldMap worldmap;
 812
 813   worldmap.set_map_filename("/levels/world1/worldmap.stwm");
 814   // Load the game or at least set the savegame_file variable
 815   worldmap.loadgame(slotfile);
 816
 817   worldmap.display();
 818
 819   Menu::set_current(main_menu);
 820
 821   return true;
 822 }